Complex subnetting question?

Question

Complex subnetting is tripping me up completely. Using complxes subnetting, how can I break this IP address and subnet mask into 10 subnets using the fewest possible bits from the host?

Original Network IP = 172.20.0.0
Original Subnet Mask = 255.255.255.0

Please list 10 possible subnets and a new subnet mask.

I put 255.255.240.0 as the new subnet mask, but I'm not sure how to break the IP down into 10 subnets. (Unusual number to me).

Thanks for your help.

gala-day

You are correct. Thanks for your help!

Answer 1

you can not get 10 subnets....
subnets can only take values of 256-2^n

The closest number to ten ( and must be higher than 10) is 16...that means that ur subnetting is right....
255.255.240.0
that gives you 16 subnets if u r using the "subnet_zero" command and 14 if u are not.

the 10 possible subnets using the 255.255.240.0 mask are:
16 , 32, 48, 64, 80, 96, 112, 128, 144, 160

Of course you can also use these as subnet masks:
255.255.248.0 or
255.255.252.0 ==> This one will give you 64 subnets and only 2 hosts/subnet so, this gives the minimum no# of hosts but it also gives many subnets that you do not need ( 64>>>>10)
good luck